what a good timing set for hopped up 65 273

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I run Melling double roller timing chain with adjustable key ways to retard or advance, what ever you do comp cams double rollers chains always are loose like they already been stretched out. Never had any luck with Comps double rollers.
 
Just don't buy one with a single keyway; they're made for post 70 low compression motors with the timing retarded a half a tooth. Make sure the circle is centered on a tooth.
 
65TerrorCuda said:
Cloyes double roller great stuff +-4° adjustable
Why no tensioner Mike? Really helped the timing stability
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Oh maybe it helps with stability. A quality double roller will stretch but not by much. If it takes 100,000 miles in a daily driver to ruin a stock single chain how long will a double roller last in a street car driven only a few thousand miles a year? That's my take. The tensioner I installed was a Chrysler part and the tensioner blocks were narrow and apparently designed for a single chain. Not exactly cool. As the plastic material wears off where does it go? It does go through the oil pump before it gets to the filter. Your choice. I did it once but I probably won't again.
 
That makes sense. I've seen what you're talking about on 22re toyota tensioners/guides and those junk plastic pieces clog the pickup and bye bye oil pressure. Thanks Mike
 
toolmanmike said:
Oh maybe it helps with stability. A quality double roller will stretch but not by much. If it takes 100,000 miles in a daily driver to ruin a stock single chain how long will a double roller last in a street car driven only a few thousand miles a year? That's my take. The tensioner I installed was a Chrysler part and the tensioner blocks were narrow and apparently designed for a single chain. Not exactly cool. As the plastic material wears off where does it go? It does go through the oil pump before it gets to the filter. Your choice. I did it once but I probably won't again.
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I checked the stretch on a stock 340 double roller timing chain with over 100K and it was a little loose but still within spec. It was run hard but well taken care of.
 
I too run cloyes timing set and no tensioner. Also believe in time plastic slider part crumble and clog oil pick up. Not worth it.
 
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